Results 61 to 70 of about 13,301 (232)
Exact dynamics of quantum correlations of two qubits coupled to bosonic baths
New Journal of Physics, 2013 Dynamics of the quantum entanglement and quantum discord of two qubits in two independent baths and a common bath with the Lorentzian spectrum are studied exactly in the numerical sense within the hierarchy approach.
Chen Wang, Qing-Hu Chen
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Dynamics of quantum discord of two coupled spin-1/2’s subjected to time-dependent magnetic fields
Results in Physics, 2019 We describe the dynamics of quantum discord of two interacting spin-1/2’s subjected to controllable time-dependent magnetic fields. The exact time evolution of discord is given for various input mixed states consisting of classical mixtures of two Bell ...
Roberto Grimaudo +4 more
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General bounds for quantum discord and discord distance [PDF]
Quantum Information Processing, 2014 For any bipartite state, how strongly can one subsystem be quantum correlated with another? Using the Koashi-Winter relation, we study the upper bound of purified quantum discord, which is given by the sum of the von Neumann entropy of the unmeasured subsystem and the entanglement of formation shared between the unmeasured subsystem with the ...
Liu, Feng +4 more
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Quantum correlation in three-qubit Heisenberg model with Dzyaloshinskii-Moriya interaction
, 2011 We investigate the pairwise thermal quantum discord in a three-qubit XXZ model with Dzyaloshinskii-Moriya (DM) interaction. We find that the DM interaction can increase quantum discord to a fixed value in the anti- ferromagnetic system, but decreases ...
A.K. Pal +10 more
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Operational interpretations of quantum discord [PDF]
, 2011 Quantum discord quantifies non-classical correlations going beyond the standard classification of quantum states into entangled and unentangled ones. Although it has received considerable attention, it still lacks any precise interpretation in terms of ...
A. Winter +8 more
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Quantum discord and Maxwell’s demons [PDF]
Physical Review A, 2003 Quantum discord was proposed as an information theoretic measure of the ``quantumness'' of correlations. I show that discord determines the difference between the efficiency of quantum and classical Maxwell's demons in extracting work from collections of correlated quantum systems.
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Topology of quantum discord [PDF]
Journal of Physics A: Mathematical and Theoretical, 2017 Revised version submitted to Physical Review ...
Nguyen, Nga T. T., Joynt, Robert
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Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
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Quantum correlations in optomechanical system in the presence of optical feedback
Physics Open, 2022 In this paper, we investigate the dynamics of quantum correlations for the continuous-variable bipartite optomechanical system in the presence of homodyne mediated quantum feedback.
Sitotaw Eshete
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Discord and non-classicality in probabilistic theories
, 2011 Quantum discord quantifies non-classical correlations in quantum states. We introduce discord for states in causal probabilistic theories, inspired by the original definition proposed in Ref. [17].
D. M. Greenberger +4 more
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